1. ASTM Standard E 112, 1996e2, “Standard Test Methods for Determining Average Grain Size”, ASTM International, West Conshohocken, PA, www.astm.org
2. ASTM Standard E 1181, 2002, “Standard Test Methods for Characterizing Duplex Grain Sizes”, ASTM International, West Conshohocken, PA, www.astm.org
3. ASTM Standard E 930, 1999, “Standard Test Methods for Estimating the Largest Grain Observed in a Metallographic Section (ALA Grain Size)”, ASTM International, West Conshohocken, PA, www.astm.org
4. M. Stoschka “Assessment of Lifetime Calculation of Forged IN718 Aerospace Components Based on a Multi-Parametric Microstructural Evaluation”, Superalloys , 2008, 573 582